're asking is an important one. >> there's assumption the united states has military might to wipe out the nuclear programs. but there's -- there's an argument that israel's making, these things are hidden, underground. how do we know whether we would just be slowing them down and delaying the inevitable? >> well, i think we have to -- here again we have to wreck flies a certain fact. neither the united states nor israel can destroy the iranian capacity to build a nuclear weapon once and for all. we can destroy all of the facilities in the infrastructure that they have and it would be very costly and take them time to rebuild it, but they have the know-how and engineering capability to rebuild whatever would be destroyed. one of the reason it's important to create a context where the international community believes everything's been done that could be done and you've exhausted all of the diplomatic options and given the economic sanctions sufficient time, you need that so that the world says, you know what? the iranians had a chance to prevent the use of force against them, they didn'